Changes

Introduce authorization checks in the Session API

* Include a configurable default fallback to allow all, allow authenticated only, or forbid all
* Apply as many checks as possible prior to accessing the gateway thread

Signed-off-by: Tim Ward <timothyjward@apache.org>
 (commit: dab4465)

Lint checking fixes

Spacing tidy up and adding a missing license header

Signed-off-by: Tim Ward <timothyjward@apache.org>
 (commit: a918712)

Make the sensiNact build more CI friendly

Since Maven 3.5.0 poms have had the ability to be [CI-friendly](https://maven.apache.org/maven-ci-friendly.html) allowing a more flexible approach to releasing without the need to edit POM files. This also impacts the creation of our feature files, which can now flexibly alter the versions of the bundles they deploy to match what's being built in by CI. The end result should be a much simpler time when we want to tag or release any particular commit.

Signed-off-by: Tim Ward <timothyjward@apache.org>
 (commit: 75ebfda)